𝔖 Bobbio Scriptorium
✦   LIBER   ✦

Performance of a ZVI-UASB reactor for azo dye wastewater treatment

✍ Scribed by Yaobin Zhang; Yanwen Jing; Jingxin Zhang; Lifang Sun; Xie Quan

Publisher
Wiley (John Wiley & Sons)
Year
2010
Tongue
English
Weight
168 KB
Volume
86
Category
Article
ISSN
0268-2575

No coin nor oath required. For personal study only.

✦ Synopsis

BACKGROUND: Zero valent iron (ZVI) is expected to be helpful for creating an enhanced anaerobic environment that might improve the performance of the anaerobic process. Based on this idea, a ZVI packed upflow anaerobic sludge blanket reactor (ZVI-UASB) was developed to enhance azo dye wastewater treatment.

RESULTS:

The ZVI-UASB reactor was less influenced by a decrease in the operational temperature from 35 • C to 25 • C than a reference UASB reactor that did not contain ZVI. In addition, chemical oxygen demand (COD) and color removal efficiencies of the ZVI-UASB reactor at an HRT of 12 h exceeded those of the reference reactor at an HRT of 24 h. The hydraulic circulation in the ZVI bed enhanced the function of ZVI so that it improved the COD and color removal efficiencies. Moreover, fluorescence in situ hybridization experiments revealed that the abundance of Archaea in the sludge of the ZVI bed was significantly higher than that at the reactor bottom, which made the reactor capable of greater COD removal under low temperature and short HRT conditions. CONCLUSION: This ZVI-UASB reactor could adapt well to changes in the operational conditions during wastewater treatment.

📜 SIMILAR VOLUMES

Performance assessment of a UASB–anoxic–
Performance assessment of a UASB–anoxic–oxic system for the treatment of tomato-processing wastes
✍ Alpesh Gohil; George Nakhla 📂 Article 📅 2006 🏛 Wiley (John Wiley & Sons) 🌐 English ⚖ 260 KB

## Abstract An upflow anaerobic sludge blanket (UASB)–anoxic–oxic system was used to achieve biochemical oxygen demand, NH~4~ and total suspended solids (TSS) criteria of 15, 1 and 15 mg dm^−3^ at 1.17 days of system hydraulic retention time during treatment of tomato‐processing waste. The incorpor

Neural network prediction of thermophili
Neural network prediction of thermophilic (65°C) sulfidogenic fluidized-bed reactor performance for the treatment of metal-containing wastewater
✍ Erkan Sahinkaya; Bestamin Özkaya; Anna H. Kaksonen; Jaakko A. Puhakka 📂 Article 📅 2006 🏛 John Wiley and Sons 🌐 English ⚖ 164 KB 👁 1 views

## Abstract The performance of a fluidized‐bed reactor (FBR) based sulfate reducing bioprocess was predicted using artificial neural network (ANN). The FBR was operated at high (65°C) temperature and it was fed with iron (40–90 mg/L) and sulfate (1,000–1,500 mg/L) containing acidic (pH = 3.5–6) syn

The performance of constructed wetlands
The performance of constructed wetlands for, wastewater treatment: a case study of Splash wetland in Nairobi Kenya
✍ Daniel Muasya Nzengy'a; B. E. L Wishitemi 📂 Article 📅 2001 🏛 John Wiley and Sons 🌐 English ⚖ 92 KB

## Abstract The performance of a constructed wetland for wastewater treatment was examined for four months (December 1995 to March 1996). The study area, hereby referred to as the Splash wetland, is approximately 0·5 ha, and is located in the southern part of Nairobi city. Splash wetland continuous

Systematic study of the performance of a
Systematic study of the performance of a reverse flow reactor for the treatment of lean hydrocarbon emissions
✍ Pablo Marín; Salvador Ordóñez; Fernando V. Díez 📂 Article 📅 2009 🏛 Wiley (John Wiley & Sons) 🌐 English ⚖ 316 KB

## Abstract **BACKGROUND:** Reverse flow reactors are widely used for the treatment of gaseous emissions containing different hydrocarbons. However, most of the reported studies are focused on the combustion of a given hydrocarbon over a given catalyst. Consequently, any conclusions are difficult t